Chemy 11: Voltaic Cell

Which pair of electrode will produced highest ammeter reading?

• Zinc//Copper

• Magnesium//Aluminium

• Zinc//Lead

• Magnesium//Copper

The conversion of energy occur in voltaic cell is from .... energy to .... energy.

• Electrical, kinetic

• Chemical, electrical

• Electrical, chemical

In an experiment, a magnesium plate and copper plate are used as electrode. Which of these plate will become a negative terminal?

• Magnesium plate

• Copper plate

Referring to your answer in question 3, why do you chose the plate as negative terminal?

• The position of Cu is below Mg

• The E⁰ value of Cu is more positive

• The position of Mg is above Cu

• The E⁰ value of Mg is more negative

Which of these are the best answer.

• Anode is electrode where oxidation occurs

• Cathode is electrode where the oxidation occurs

• Anode is electrode where reduction occurs

• Cathode is electrode where the reduction occurs

• Electron flow from negative terminal(anode) to positive terminal(cathode)

What is the function of salt bridge in Daniell Cell?

• To separate the two solutions

• To allow the electrons to flow

• To allow the movement of ions

Which of these voltaic cell cannot be recharged?

• Daniell Cell

• Lead-acid accumulator

• Dry cell

• Alkaline cell

In simple chemical cell, the potential difference detected by..

• Ammeter

• Voltmeter

• Kilometer